1. Department of Biomedical Engineering & Physics; Academic Medical Center; Amsterdam The Netherlands
2. Department of Obstetrics and Gynecology; University Medical Center; Utrecht The Netherlands
3. Department of Pathology; University of California at San Diego; San Diego California
4. Department of Public Health and Obstetrics and Gynecology; Erasmus Medical Center; Rotterdam The Netherlands
5. Department of Obstetrics and Gynecology; Radboud University Medical Center; Nijmegen The Netherlands
6. Department of Obstetrics and Gynecology; Gelre Teaching Hospitals; Apeldoorn The Netherlands
7. Department of Pathology, Wilhelmina Children's Hospital; University Medical Center; Utrecht The Netherlands